CVE-2022-50749 (GCVE-0-2022-50749)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:05 – Updated: 2025-12-24 13:05
VLAI?
Title
acct: fix potential integer overflow in encode_comp_t()
Summary
In the Linux kernel, the following vulnerability has been resolved: acct: fix potential integer overflow in encode_comp_t() The integer overflow is descripted with following codes: > 317 static comp_t encode_comp_t(u64 value) > 318 { > 319 int exp, rnd; ...... > 341 exp <<= MANTSIZE; > 342 exp += value; > 343 return exp; > 344 } Currently comp_t is defined as type of '__u16', but the variable 'exp' is type of 'int', so overflow would happen when variable 'exp' in line 343 is greater than 65535.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e93f995a591c352d35d89c518c54f790e1537754 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cf60bbca1b83a7e0927e36dbf178328982927886 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1750a0983c455a9b3badd848471fc8d58cb61f67 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a815a3e019456c94b03bd183e7ac22fd29e9e6fd (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6edd0cdee5780fd5f43356b72b29a2a6d48ef6da (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ebe16676e1dcaa4556ec4d36ca40c82e99e88cfa (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2224897d8187dc22a83e05d9361efcccf67bcf12 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0aac6e60c464a5f942f995428e67f8ae1c422250 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c5f31c655bcc01b6da53b836ac951c1556245305 (git)
Create a notification for this product.
    Linux Linux Unaffected: 4.9.337 , ≤ 4.9.* (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/acct.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e93f995a591c352d35d89c518c54f790e1537754",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "cf60bbca1b83a7e0927e36dbf178328982927886",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "1750a0983c455a9b3badd848471fc8d58cb61f67",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "a815a3e019456c94b03bd183e7ac22fd29e9e6fd",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "6edd0cdee5780fd5f43356b72b29a2a6d48ef6da",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "ebe16676e1dcaa4556ec4d36ca40c82e99e88cfa",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "2224897d8187dc22a83e05d9361efcccf67bcf12",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "0aac6e60c464a5f942f995428e67f8ae1c422250",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "c5f31c655bcc01b6da53b836ac951c1556245305",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/acct.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.337",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.303",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.270",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.229",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.163",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.86",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nacct: fix potential integer overflow in encode_comp_t()\n\nThe integer overflow is descripted with following codes:\n  \u003e 317 static comp_t encode_comp_t(u64 value)\n  \u003e 318 {\n  \u003e 319         int exp, rnd;\n    ......\n  \u003e 341         exp \u003c\u003c= MANTSIZE;\n  \u003e 342         exp += value;\n  \u003e 343         return exp;\n  \u003e 344 }\n\nCurrently comp_t is defined as type of \u0027__u16\u0027, but the variable \u0027exp\u0027 is\ntype of \u0027int\u0027, so overflow would happen when variable \u0027exp\u0027 in line 343 is\ngreater than 65535."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T13:05:44.734Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e93f995a591c352d35d89c518c54f790e1537754"
        },
        {
          "url": "https://git.kernel.org/stable/c/cf60bbca1b83a7e0927e36dbf178328982927886"
        },
        {
          "url": "https://git.kernel.org/stable/c/1750a0983c455a9b3badd848471fc8d58cb61f67"
        },
        {
          "url": "https://git.kernel.org/stable/c/a815a3e019456c94b03bd183e7ac22fd29e9e6fd"
        },
        {
          "url": "https://git.kernel.org/stable/c/6edd0cdee5780fd5f43356b72b29a2a6d48ef6da"
        },
        {
          "url": "https://git.kernel.org/stable/c/ebe16676e1dcaa4556ec4d36ca40c82e99e88cfa"
        },
        {
          "url": "https://git.kernel.org/stable/c/2224897d8187dc22a83e05d9361efcccf67bcf12"
        },
        {
          "url": "https://git.kernel.org/stable/c/0aac6e60c464a5f942f995428e67f8ae1c422250"
        },
        {
          "url": "https://git.kernel.org/stable/c/c5f31c655bcc01b6da53b836ac951c1556245305"
        }
      ],
      "title": "acct: fix potential integer overflow in encode_comp_t()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50749",
    "datePublished": "2025-12-24T13:05:44.734Z",
    "dateReserved": "2025-12-24T13:02:21.544Z",
    "dateUpdated": "2025-12-24T13:05:44.734Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50749\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:01.613\",\"lastModified\":\"2025-12-24T13:16:01.613\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nacct: fix potential integer overflow in encode_comp_t()\\n\\nThe integer overflow is descripted with following codes:\\n  \u003e 317 static comp_t encode_comp_t(u64 value)\\n  \u003e 318 {\\n  \u003e 319         int exp, rnd;\\n    ......\\n  \u003e 341         exp \u003c\u003c= MANTSIZE;\\n  \u003e 342         exp += value;\\n  \u003e 343         return exp;\\n  \u003e 344 }\\n\\nCurrently comp_t is defined as type of \u0027__u16\u0027, but the variable \u0027exp\u0027 is\\ntype of \u0027int\u0027, so overflow would happen when variable \u0027exp\u0027 in line 343 is\\ngreater than 65535.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0aac6e60c464a5f942f995428e67f8ae1c422250\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1750a0983c455a9b3badd848471fc8d58cb61f67\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2224897d8187dc22a83e05d9361efcccf67bcf12\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6edd0cdee5780fd5f43356b72b29a2a6d48ef6da\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a815a3e019456c94b03bd183e7ac22fd29e9e6fd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c5f31c655bcc01b6da53b836ac951c1556245305\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cf60bbca1b83a7e0927e36dbf178328982927886\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e93f995a591c352d35d89c518c54f790e1537754\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ebe16676e1dcaa4556ec4d36ca40c82e99e88cfa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.